17994

Appears in sequences

• Convolution of odd numbers and A000201.at n=31A023658
• a(n)=Sum{T(n,j): j=1,2,...,n}, array T given by A048225.at n=27A048235
• Expansion of 2x(1-x)/(1-2x-x^2+x^3).at n=13A052994
• Number of primitive (aperiodic) palindromes using exactly three different symbols.at n=17A056464
• 3-wave sequence beginning with 2's.at n=24A060827
• Indices of primes in the sequence defined by A(0) = 29, A(n) = 10*A(n-1) - 21 for n > 0.at n=17A101965
• Numbers n such that n/6 and prime(n)+/-n are all primes.at n=27A105550
• a(n) = p^2 - sum of digits of p^p, where p = prime(n).at n=33A140499
• Numbers k such that log(A156668(k)*(1 + k mod 2))/k^2 is smaller than for any prior k.at n=24A186082
• Number of length n inversion sequences avoiding the patterns 102, 201, and 210.at n=9A279563
• Number of pairs (lambda,mu) of partitions lambda of n and mu of floor(n/2) with mu <= lambda (by diagram containment).at n=21A303851
• Number of pairs (lambda,mu) of partitions lambda of n and mu of 10 with mu <= lambda (by diagram containment).at n=11A303860
• Number of pairs (lambda,mu) of partitions lambda of 2n+1 and mu of n with mu <= lambda (by diagram containment).at n=10A303862
• Number of compositions of n such that the difference between adjacent parts is at least two.at n=24A332829